Transmission.



R. E. DIAL.

TRANSMISSION.

APPLICATION FILED APR-12. 1915.

Patented Dec. 14, 1915.

2 SHEETS-SHEET I.

A llllllll lllllll ll llllllllll Witnesses Inventor Attorneys COLUMBIA muoomm co..wummmu. n.c

R. E. DIAL.

TRANSMISSION.

APPLICATION FILED APR. 12. 1915.

IJMAM. 1 Patented Dec. 14, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH CO-IWASHINGTKVN, D-C.

Attorneys entrain snares PATENT crimson.

ROBERT E. DIAL, or ATnEnrom mart an mausmssio'ni Application filed April 12, 1915.

T 0 all whom it may concern:

Be it known that 1, ROBERT E. DIAL, a citizen of the United States, residing at Atherton, in the county of Vigo and State of Indiana, have invented a new and useful Transmission, of which the following is a specification.

The present invention appertains to speed change gearing or transmissions, and aims to provide a novel and improved transmission gearing whereby the driven element may berotated at various speeds relative to the driving element, and whereby the device may-be changed from one speed to the other without stopping, or without stopping the engine or opening the clutch.

Another object of the invention is to provide a transmission gearing embodying a unique assemblage of the component parts, whereby the device operates in a thoroughly practical and efiicient manner, the device also being comparatively simple and inexpensive in construction, as well as being durable and convenient in use.

With the foregoing-and other objects in view which will appear as the description proceeds, the invention resides in the com? bination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit ofthe invention.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a plan view of the improved mechanism, portions being broken away. Fig. 2 is a longitudinal section taken on the line 2-2 of Fig. 1. Fig. 3 is an enlarged cross section taken on the line 33 of Fig. 1. Fig. 4 is an enlarged sectional detail taken on the line 14 of Fig. 1.

In carrying out the invention, there is provided a suitable frame or support 1,upon which is ournaled a transverse shaft 2 having a pair of disks 3 and 4 keyed or otherwise secured thereon. Each of the disks 3 and 4: is provided with a plurality of annular series of apertures 5 which are concentric, and each of the disks is provided with oppositely extending series of apertures or openings 6 between the annular series of apertures 5, The apertures 6 ex- Specification of Letters Patent.

Patentedlflvec. 1L4, 19 1.5.

Serial No. 20,793.

tend alongspiral lines between the respec tive series of apertures 5. Each of. the disks may be provided withv a number of'the'annular series of apertures 5, according tolthe number of speed changes desired.

A transverse guide 7 is carried by the frame 1 adjacent the peripheries of. the disks 3 and 4:, and a slidable'bearing 8 is movable transversely in the guide 7. A. shaft 9 isjournaled through the bearing-r8, and is providedbetween the disks 3 and F with a pinion 10 having an annulanseriesi of peripheral lugs adapted to-work properly in the apertures '5"andG ofthedisksL:

That end of the shaft 9 remotexfrolnthei disks is telescopically engaged to: a shaft" 11 to rotate therewith, andthe shaft 11 is connected by a universaljoint12with the driving shaft 13. The drive shaft13 is connectedto the engine or primemover in any suitable manner, and the. shaft 2 inthepiresr.

ent case is thegdriven element, but the same may be connected-1n any sultablemanner to" another shaft or device for driving the'same. Means is provided for shifting the shaft 9 longitudinally, and to this end a hand. lever 1a is fulcrumed to the frame, and has a bar 15 pivoted thereto which is provided with a fork 16 engaging a grooved collar 17 secured upon the shaft 9, wherebyiwh'ena the lever let is swung, it will move' tlieishafta longitudinally.

y A mechanism isemployed-for shiftingthe; pinion 10.;laterally into and out of engagew ment with the disks 3 and 4, andtothisend; a pair of wedges l8 are'disposed betweenthe:

ends of the bearing 8 and the ends of the uide 7,'and have their smaller ends pro Jecting toward the shaft 2 of the disks 3 and 4. Upper and lower levers 19 have their ends or arms pivoted to the larger ends of the wedges 18, and have their intermediate portions pivoted to V-shaped brackets 20 which are terminally secured to the bearing 8. The bearing is preferably provided with a pair of upstanding pins 21 which work in elongated slots 22 provided in the upper portion of the guide 7 for properly guiding the bearing 8. A link 23 connects one wedge 18 and a hand lever 24 which is fulcrumed upon the frame 1. When the lever 24: is swung in one direction one wedge 28 is projected between one end of the guide 7 and the respective end of the bearing 8, while the other wedge is retracted from between the otherliends ofthe guide and bearing, for shifting the bearing 8 to one side, and when the lever 24 is moved in the opposite direction theoperation will'bereversed for moving the bearing 8 toward the other side.

In operation, supposing the pinion10 to be engaged to one annular series of apertur'es f one disk, the shaft 9 in being rotated with the driving shaft 18, will rotate the corresponding disk for driving the shaft 2. The speed may be readily changed, without stopping the operation of any of the parts, by swinging the lever '14 to move the shaft 9 in the desired direction either toward or away from the shaft 2, and the pinion 10 will follow the proper series of apertures 6 and run into the next annular series of apertures 5,. ,The apertures 16 are so arranged that the pinion- 10 may move in either direction from-one annular series of apertures 5 to the-other, and the apparatus may thus be readily manipulated for-setting the same from one speed to the other, without an interruption in the operation of the mechanism. When the pinion 10 is engaged to one disk it will rotate the shaft 3 in one direction, and when the pinion 10 is shifted into engagement with the other disk, the shaft 2 will be rotated in the opposite direction, whereby the driven shaft or element 2 may be rotated in opposite directions. Theshifting of the pmion 10 is accomplished by swinging the hand lever 24, which in causing the wedgesl8 to move in opposite directions between the ends of the bearing and guide will shift the bearing 8 properly for moving the pinion into engagement with one or the other of the disks. When the hand lever-24 is moved to'an intermediate position, the pinion 10 will be moved to a neutral position between the disks so as to be disengaged from both disks, and to thereby break the connection between the driving and driven elements. Thus, by controlling the leversla and 24E the mechanism may be properly setaccording to the speed desired,

struction, within the scope of the appended claim, in adapting it to various environments.

Having thus described the invention, what is claimed as new is In a transmission gearing, a frame, atransverse shaft journaled thereto, a pair of disks carried by said shaft within the frame, a transverse guide carried by the frame adj acent said disks, a longitudinal shaft journaled to the frame, a shaft having a universal joint with the second mentioned shaft, a shaft having a telescopic connection with the third mentioned shaft and having a pinion between and alternately engageable with said disks, a bearing movable in said guide, the fourth mentioned shaft being slidable through said bearing, a collar upon the fourth mentioned shaft, a hand lever carried by theframe and operatively connected to said collar for shifting the fourth mentioned shaft longitudinally, a pair of wedges between the ends of the bearing and guide, a bracket carried by the guide, a lever fulcrumed upon said bracket and pivoted to the larger ends of the wedges, and a hand lever carried by the frame and operatively connected to one of said wedges.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

ROBERT E. DIAL.

lVitnesses LLOYD DIAL, ELLIOTT DIAL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' J V Washington, I). C. 

